GHSA-27qj-9gvp-8rh9
Packetbeat does not properly validate an array index in multiple protocol parser components
At a glance
- Published
- Updated
- CVE
- CVE-2026-26933
- Aliases
- GO-2026-4789
- CVSS_V3
- CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
Improper Validation of Array Index (CWE-129) in multiple protocol parser components in Packetbeat can lead Denial of Service via Input Data Manipulation (CAPEC-153). An attacker with the ability to send specially crafted, malformed network packets to a monitored network interface can trigger out-of-bounds read operations, resulting in application crashes or resource exhaustion. This requires the attacker to be positioned on the same network segment as the Packetbeat deployment or to control traffic routed to monitored interfaces.
Affected packages
| Package | Versions |
|---|---|
| Go · github.com/elastic/beats/v7 | introduced 0, fixed 7.0.0-alpha2.0.20260126223743-dec1b31111ec |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-26933 ADVISORY
- https://github.com/elastic/beats/commit/941098459db6556b837194f40c076b08d51137cb WEB
- https://github.com/elastic/beats/commit/dec1b31111ec3500b82db21ba67dde5c914ee94d WEB
- https://discuss.elastic.co/t/packetbeat-8-19-11-9-2-5-security-update-esa-2026-11/385533 WEB
- https://github.com/elastic/beats PACKAGE
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |